Re: Overlap subnets in AD sites and Services

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in sites and subnet, the more precise subnet wins.
So you can use a very large subnet and then more specific one when a site got a DC

--
Cordialement,
Mathieu CHATEAU
http://lordoftheping.blogspot.com


"lansvcs" <lansvcs@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message news:3516A562-921F-4C24-87E2-3A2AC1CC5CAD@xxxxxxxxxxxxxxxx
thanks much, that is much more clear. we will have a DC at each regional
campus (each campus will be a site) so i can do the whole class B for the
main campus site and then the subnets used at each regional for each of those
sites even though they will be a subset of the range at the main site. is
that correct?

Ed

"Mathieu CHATEAU" wrote:

Hello,

For the main site to be the "default", assign it a subnet that will always
match, like 10.0.0.0/8

For the others, that's only interesting if you can bind them to a DC.
Just assign the minimum to get station using the DC you want. There is
nothing usefull in setting all subnet you have if you only have all DC at
the same site for example

--
Cordialement,
Mathieu CHATEAU
http://lordoftheping.blogspot.com


"lansvcs" <lansvcs@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:B5AA5B87-5A24-4232-B096-7A68F2E300B1@xxxxxxxxxxxxxxxx
> Hello,
>
> I am still having trouble understanding the best way to define my > subnets.
> We are a state university with a class B license and we are extensively
> subnetted. Countless classless subnets and superscopes. We have > several
> regional campuses with limited bandwidth connections that we plan to > make
> sites. What i would like to do is define each regional as a site and > list
> the ips used there, which is a project in itself to define all of > these.
> After explicitly defining the subnets for each reigonal campus site i
> would
> like the main campus to be "everything else". To list each subnet in > use
> on
> the main campus site would literally be prohibitive. How can i > accomplish
> this.
>
> thanks
>
> Ed
>
> "Joe Richards [MVP]" wrote:
>
>> This is called supernetting or creating a "catchall" site, it is
>> perfectly fine, I was doing it a few months after Windows 2000 RTM'ed.
>>
>>
>> --
>> Joe Richards Microsoft MVP Windows Server Directory Services
>> Author of O'Reilly Active Directory Third Edition
>> www.joeware.net
>>
>>
>> ---O'Reilly Active Directory Third Edition now available---
>>
>> http://www.joeware.net/win/ad3e.htm
>>
>>
>> NikkiP wrote:
>> > Can someone verify if it's ok to have overlapped subnets in AD Sites
>> > and
>> > services?
>> > Let say, I want to configure my sites and services as the >> > followings:
>> >
>> > 10.20.0.0 /16 - Site 1
>> > 10.20.1.0 /24 - Site 2
>> > 10.20.2.0 /24 - Site 3
>> >
>> > I want clients that use ip address 10.20.1.x, 255.255.255.0 to go to
>> > Site 2
>> > and 10.20.2.x, 255.255.255.0 go to Site 3 to look for DCs and >> > anything
>> > else
>> > go to Site 1. How would clients determine if it should go to site 1 >> > or
>> > 2 if
>> > it use 10.20.1.10?
>> >
>> > There are discussions about using supernetting to simplify AD Sites >> > and
>> > Services configuration, but I couldn't find any articles on >> > Microsoft
>> > web
>> > site that talk about supernetting or what are the best practices? I
>> > work in a
>> > very large environment that have over 2,000 branches all over the
>> > world. I'm
>> > trying to get my AD Sites and Services configured correctly. Any >> > helps
>> > are
>> > greatly appreciated.
>>



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